/**
 * @license
 * Copyright 2018 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

goog.module('googlecodelabs.HelloElement');

/**
 * @extends {HTMLElement}
 */
class HelloElement extends HTMLElement {
  /**
   * @export
   * @override
   */
  connectedCallback() {
    console.log("HelloElement: connected");
    this.innerHTML = "Hello. I have just been <b>upgraded</b>!";
  }
}

window.customElements.define('hello-element', HelloElement);

exports = HelloElement;
